ABB OTM63F4C21D400C automatic transfer switch, a compact 63 A 4-pole motor-operated ATS designed for reliable backup power transfer in industrial and commercial installations.
£1,760.89
The ABB OTM63F4C21D400C is a compact and dependable automatic transfer switch (ATS) engineered for secure power source switching in industrial, commercial and critical backup power applications. As part of the trusted ABB Compact ATS series, it enables automatic transfer between mains and standby power supplies while maintaining reliable electrical continuity and operational safety.
This motor-operated transfer switch integrates ABB’s proven switch-disconnector technology with advanced automatic transfer functionality, providing fast and secure source switching during power interruptions or generator startup conditions. Its compact footprint simplifies installation inside switchboards and electrical distribution panels.
With a rated operational current of 63 A, a 4-pole configuration, and a 380–415 V AC motor operating voltage, the OTM63F4C21D400C is ideal for commercial buildings, industrial automation systems, generator installations and critical infrastructure requiring reliable automatic power transfer. Its open transition switching operation ensures dependable and safe transfer between electrical sources.
Automatic transfer switches such as the ABB OTM63F4C21D400C automatically transfer electrical loads between primary and standby power supplies during mains failures or maintenance operations. This helps maintain operational continuity while protecting critical systems and electrical infrastructure.
ABB Compact ATS devices are widely used by electrical engineers, panel builders and OEM manufacturers due to their compact dimensions, reliable switching performance and simplified installation. The integrated motor-operated mechanism provides secure and consistent source transfer functionality for industrial and commercial environments.
| Power | 41 kW |
|---|---|
| Current | 63 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | Compact ATS |
| Product type | Automatic transfer switch |
| Rated operational current | 63 A |
| Number of poles | 4P |
| Rated operational voltage | 380–415 V AC |
| Motor operational voltage | 380–415 V AC |
| Rated operational power AC-23A | 41 kW |
| Rated insulation voltage | 800 V |
| Rated impulse withstand voltage | 8 kV |
| Rated short-time withstand current | 2.5 kA for 1 second |
| Transition type | Open transition |
| Controller type | 21D |
| Protection rating | Front IP20 |
| Mounting type | Base mounting or DIN rail mounting |
| Terminal type | Screw terminals |
| Dimensions (W × H × D) | approx. 233 × 130 × 131 mm |
| Weight | approx. 2.1 kg |
| Standards | IEC 60947-3 |
| HS Code | 85365080 |
| Country of Manufacture | China |
This automatic transfer switch transfers electrical loads between mains and backup power supplies during supply interruptions or generator operation.
The switch is rated for 63 A operation in industrial and commercial electrical installations.
The OTM63F4C21D400C uses an open transition switching configuration with a 1-0-2 operating sequence.
Yes, the switch includes a manual operating handle for local control and maintenance purposes.
The switch is commonly installed in generator transfer panels, industrial switchboards and commercial electrical distribution systems.
ABB Compact ATS transfer switches are trusted by industrial engineers, electrical contractors and panel builders for dependable automatic source transfer, robust switching performance and compact installation.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...